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Sonic Geometry: Difference between revisions
→Square 360 Degrees
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* All four sides of a square are equal. | * All four sides of a square are equal. | ||
* The diagonals of a square are equal.<ref>[https://en.wikipedia.org/wiki/Square Square wiki]</ref> | * The diagonals of a square are equal.<ref>[https://en.wikipedia.org/wiki/Square Square wiki]</ref> | ||
==Pentagon 540 Degrees== | |||
In geometry, a pentagon (from the Greek πέντε pente and γωνία gonia, meaning five and angle) is any five-sided polygon or 5-gon. The sum of the internal angles in a simple pentagon is 540°. | |||
A pentagon may be simple or self-intersecting. A self-intersecting regular pentagon (or star pentagon) is called a pentagram. A regular pentagon has five lines of reflectional symmetry, and rotational symmetry of order 5 (through 72°, 144°, 216° and 288°). The diagonals of a convex regular pentagon are in the golden ratio to its sides. <ref>[https://en.wikipedia.org/wiki/Pentagon Pentagon wiki]</ref> | |||
==References== | ==References== | ||